Excel VBA - 获取图表数据范围 [英] Excel VBA - Get chart data range

问题描述

我想将数据添加到一堆现有图表中.假设每个图表具有不同数量的数据系列，并且原始数据的位置在同一工作簿中的某个位置.这是我的开始:

I want to add data to a bunch of existing charts. Assume that each chart has a different number of data series and that the location of the raw data is somewhere in the same workbook. Here's what I'm starting with:

For iChart = 1 To iCount
    ActiveSheet.ChartObjects("Chart " & iChart).Activate
    intSeries = 1
    Do Until ActiveChart.SeriesCollection(intSeries).Name = ""
        Set rXVal = ActiveChart.SeriesCollection(intSeries).XValues '<- Object Required error
        Set rXVal = Range(rXVal, rXVal.End(xlDown))
        Set rYVal = ActiveChart.SeriesCollection(intSeries).Values
        Set rYVal = Range(rYVal, rYVal.End(xlDown))
        ActiveChart.SeriesCollection(intSeries).XValues = rXVal
        ActiveChart.SeriesCollection(intSeries).Values = rYVal
        intSeries = intSeries + 1
    Loop
Next iChart

我知道 ActiveChart...XValues = rXVal 有效，但我收到了一个Object Required"Set rXVal = ActiveChart....XValues 行上的错误.我假设由于一个范围进入定义数据系列，我可以再次取出该范围然后添加到它.

I know that ActiveChart...XValues = rXVal works, but I'm getting an "Object Required" error on the Set rXVal = ActiveChart....XValues line. I'm assuming that since a range went in to define the data series, I can get that range back out again and then add to it.

更新
为了澄清一些事情，我在 8 个地方有加速度计和 FFT 软件设置来记录 4 个独立频段的峰值振动响应.这会为每个样本产生 32 个数据点.导出时，软件吐出一个4张的Excel工作簿；每个频段一个.每张纸上都有加速度计名称和样本编号.

UPDATE
To clarify things a little, I have accelerometers in 8 places and FFT software setup to record peak vibration response in 4 separate frequency bands. This yields 32 data points per sample. When exporting, the software spits out an Excel workbook with 4 sheets; one for each frequency band. Each sheet has the accelerometer names going across and sample numbers going down.

推荐答案

我已经成功地使用了这个语法:

I have succeeded using this syntax:

Dim rXVal() As Variant
rXVal = ActiveChart.SeriesCollection(intSeries).XValues

更新

在这种情况下，您会得到一个数组，因为您的给定语句 (ActiveChart.SeriesCollection(intSeries).XValues) 是一个数组，而不是一个范围.如果您深入研究 ActiveChart.SeriesCollection(intSeries) 的 Series 对象，这就是您在 Locals 窗口中看到的内容:

In this case you get an array, because your given statement (ActiveChart.SeriesCollection(intSeries).XValues) is an array and not a range. This is what you see in Locals window if you dig into Series object of ActiveChart.SeriesCollection(intSeries):

(在我的虚拟数据中，我有名为 r1、r2、r3、r4 的行.)

(in my dummy data I have rows named r1, r2, r3, r4.)

我想说的是，XValues 没有任何表示其占用范围的属性.

What I want to say, XValues does not have any property which would indicate its occupied range.

如果您确实需要一个范围，我建议您从 formula 属性中获取它.我建议的方法是用这个替换导致错误的行:

If you actually need a range, I would suggest getting it from the formula property. And the way I would suggest is replacing your error causing line with this one:

Set rXVal = Range(Split(ActiveChart.SeriesCollection(intSeries).Formula, ",")(1))

接下来，我看到您试图获取 Values 的范围.类似地，使用这个:

Next, I see you trying to get the range for Values. Similarly, use this:

Set rYVal = Range(Split(ActiveChart.SeriesCollection(intSeries).Formula, ",")(2))

另一件事.

以下几行最终会导致您出错:

The following lines will cause you an error finally:

intSeries = 1
Do Until ActiveChart.SeriesCollection(intSeries).Name = ""
    ...some code...
    intSeries = intSeries + 1
Loop

一定要改变它们:

For intSeries = 1 To ActiveChart.SeriesCollection.Count
    ...some code...
Next

还有一件事.

考虑使用With 和End With，因为您重复了很多ActiveChart.SeriesCollection(intSeries).那么您的代码将更具可读性，因为您只需跳过这一长行！那不是很棒吗???

Consider using With and End With, as you repeat a lot ActiveChart.SeriesCollection(intSeries). Then your code will be much more readable, as you would just skip this long line! Wouldn't that be awesome???

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